I have an outdoor theater that I host movie nights at. Previously I used the JBL Flip 4's, and used their party mode to link them all together. This didn't work for me because A. The range was limited, as they did not daisy-chain, they all needed to be within range of the master speaker, so 30' away they started skipping. and B. When in party mode, they have a buffer or something that causes the audio to be slightly delayed. Not noticeable with music, but very noticeable with video. So, I am looking at other options. My first consideration was to have the source hook up to an FM transmitter and have people bring radios etc. My concerns with this is mainly just sound quality. One of the units I was looking at on Amazon for about $100 said it had a noticeable "hum" on to it. My other consideration is WiFi speakers, and since Sonos is the big dog in that department, here I am. I Would prefer a battery powered wifi speaker, but I have been unable to find one (made by sonos), so I am here to see what you guys suggest to get the sound out there. And by "out there", here is my layout(ish). Now don't drool all over my pretty drawing now! Also, pay closer attention to the distance I marked than the proportions if need be. Also, I have full WiFi coverage everywhere, so that won't be a problem.
Thanks for the help!